Version 4.0.0

Major

• Updated Node.js support to ^12.20 || >= 14.13.
• Updated dev dependencies, some of which require newer Node.js versions than were previously supported.
• The API is now ESM in .mjs files instead of CJS in .js files, accessible via import but not require.
• The function disposableDirectory is now only accessible via a default import from the main index.
• The function disposableDirectory now throws a TypeError if argument 1 callback isn’t a function.
• Added back a package sideEffects field.

Patch

• Stop using hard-rejection to detect unhandled Promise rejections in tests, as Node.js v15+ does this natively.
• Simplified the package scripts now that jsdoc-md v10 automatically generates a Prettier formatted readme.
• Added a package test:jsdoc script that checks the readme API docs are up to date with the source JSDoc.
• Updated GitHub Actions CI config:
  • Also run tests with Node.js v16.
  • Updated actions/checkout to v2.
  • Updated actions/setup-node to v2.
  • Don’t specify the CI environment variable as it’s set by default.
• Simplified the ESLint config.
• Removed npm-debug.log from the .gitignore file as npm v4.2.0+ doesn’t create it in the current working directory.
• Updated the private function fsPathRemove:
  • Throw a more specific TypeError when argument 1 path isn’t a string.
  • Resolve void.
• Simplified a rejects assertion in fsPathRemove tests.
• Removed the test helper function sleep.
• Replaced the test helper function fsPathExists with the Node.js fs.existsSync function.
• Readme tweaks.